Liquid droplet discharge head, manufacturing method thereof, and image forming apparatus

摘要

The liquid droplet discharge head comprises: a channel which is formed by joining together a plurality of thin plates which are laminated with an adhesive; and an adhesive escape groove which is provided on at least one joined surface of the thin plates in at least one location on a periphery of the channel when a ratio $\frac{M}{S^{\text{'}}}$ determined in relation to the channel is greater than a predetermined value, wherein: the ratio $\frac{M}{S^{\text{'}}}$ is a ratio between an area M and an area S'; the area M is an area of the adhesive running off to the channel at joining assuming that no adhesive escape groove is provided on the periphery of the channel, the area M being a projected area on a cross-section perpendicular to a flow direction of the channel; and the area S' is an area of a cross-section perpendicular to the flow direction of the channel at post-joining assuming that no adhesive runs off to the channel.